Quote:
Originally Posted by Paul Haese
Are you sure you could see all the mirror clips when using the Tak scope? You need to make sure you can see all of them and evenly on the edge.
Next, this image is not useful for determining collimation. One or two Freznel rings are all that are needed.
My guess is that the primary is tilted one way and the secondary tilted the other.
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Hi Paul - I didn't know if it was movement of the primary mirror or not - Image was taken after I had cut out the silicon holding the primary into the cell. Image attached taken pre silicon removal, shows that collimation with Tak scope reasonably reliable - Scope was re collimated after silicon removal and it apprears the weight of the camera and filter wheel has shifted the primary mirror. Not surprising considering the primary uses a rubber ring as a washer and the way the focuser and camera are attached.
Thanks
Geof Wingham